d398a6ced2
- CitrineOS core extracted (CSMS OCPP 2.0.1) - OpenOCPP extracted (firmware OCPP 1.6J/2.0.1) - ShapeShifter library installed (pip install -e) - ShapeShifter specification extracted - EVerest extracted TODO updated with progress
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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// Copyright (C) 2022 chargebyte GmbH
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// Copyright (C) 2022 Contributors to EVerest
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#ifndef ISOMUX_PROXY_H
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#define ISOMUX_PROXY_H
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#include <arpa/inet.h>
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#include <cstddef>
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#include <netinet/in.h>
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#include <unistd.h>
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#include "../tools.hpp"
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/*!
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* \brief connect to a local V2G server
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* \param port port to connect to
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* \param proxy_if_name network interface whose IPv6 link-local address is used
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* as the connection target. Pass nullptr (default) to fall back to ::1.
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* \return 0 on failure, otherwise the socket
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*/
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inline int proxy_connect(uint16_t port, const char* proxy_if_name = nullptr) {
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int sock_fd = -1;
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struct sockaddr_in6 server_addr {};
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/* Create socket for communication with server */
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sock_fd = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
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if (sock_fd == -1) {
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perror("socket()");
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return -1;
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}
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server_addr.sin6_family = AF_INET6;
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if (proxy_if_name != nullptr && proxy_if_name[0] != '\0') {
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/* Connect to the link-local address of the dedicated proxy interface */
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if (get_interface_ipv6_address(proxy_if_name, ADDR6_TYPE_LINKLOCAL, &server_addr) != 0) {
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perror("proxy_connect: get_interface_ipv6_address()");
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close(sock_fd);
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return -1;
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}
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} else {
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/* Fall back to loopback */
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inet_pton(AF_INET6, "::1", &server_addr.sin6_addr);
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}
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server_addr.sin6_port = htons(port);
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/* Try to do TCP handshake with server */
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int ret = connect(sock_fd, (struct sockaddr*)&server_addr, sizeof(server_addr));
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if (ret == -1) {
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perror("connect()");
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close(sock_fd);
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return -1;
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}
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return sock_fd;
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}
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#endif /* ISOMUX_PROXY_H */
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